NER DOAL Illuminator
 

Ray diagram of a DOAL system



The DOAL is an on-axis lighting system from Northeast Robotics that isused for illuminating reflective objects. With the DOAL, light rays reflect off the beam splitter directly on to the object at 90°. Using this approach, specular surfaces perpendicular to the camera appear illuminated, while surfaces at an angle to the camera appear dark. Non-specular surfaces absorb light and appear dark.

DOALs provide diffuse, uniform illumination for flat specular surfaces. By providing greater uniformity than conventional sources, DOALs increase machine vision accuracy and repeatability up to 200%.

Illumination Example



Component under fluorescent ring light
Component under DOAL illumination
DOAL Benefits

Provides superior uniformity throughout the illumination envelope

Significantly enhances image quality and repeatability of machine vision performance on specular surfaces

Compact, light weight package can be used on moving camera modules
Illumination sources include LED, fiber optic, and cold cathode fluorescent sources

Cost-effective product line
DOAL Series Description Notes
Colour
NER 010-202503 DOAL(r)-25-LED
   
NER 010-203600 DOAL(r)-25-LED
   
NER 010-200700 DOAL(r)-50-LED
   
NER 010-200701 DOAL(r)-50-LED
strobe  
NER 010-200702 DOAL(r)-50-LED
w/dust cover  
NER 010-205301 DOAL(r)-50plus-LED
   
NER 010-205800 DOAL(r)-50-LED
 
Infra Red
NER 010-202900 DOAL(r)-50-LED
   
NER 010-202901 DOAL(r)-50-LED
strobe  
NER 010-202800 DOAL(r)-50-LED
   
NER 010-202801 DOAL(r)-50-LED
strobe  
NER 010-200500 DOAL(r)-75-LED
   
NER 010-200501 DOAL(r)-75-LED
strobe  
NER 010-205400 DOAL(r)-75plus-LED
   
NER 010-205700 DOAL(r)-75-LED
   
NER 010-204900 DOAL(r)-75-LED
   
NER 010-204901 DOAL(r)-75-LED
strobe  
NER 010-200600 DOAL(r)-100-LED
   
NER 010-200601 DOAL(r)-100-LED
strobe  
NER 010-206400 DOAL(r)-100-LED
   
NER 010-204601 DOAL(r)-100-LED
   
NER 010-203400 DOAL(r)-100x200-LED
   
NER 010-205600 DOAL(r)-200-LED
   
NER 010-204000 DOAL(r)-200-LED
 
Infra Red
NER 010-202000 DOAL(r)-20-FO
 
Fibre Optic
NER 010-10000 DOAL(r)-25-FO
 
Fibre Optic
NER 010-205100 DOAL(r)-50-FO
 
Fibre Optic
NER 010-206100 DOAL(r)-75-FO
 
Fibre Optic
NER 010-210100 DOAL(r)-100-FO
 
Fibre Optic
NER 010-10003 DOAL(r)-50-FL
 
Fibre Optic
NER 010-210000 DOAL(r)-100-FL  
Fibre Optic